Charak Samhita
नित्यं स्नेहार्द्रशिरसः शिरःशूलं न जायते। न खालित्यं न पालित्यं न केशाः प्रपतन्ति च ॥८१॥
॥ Abhyanga (therapeutic massage)॥ Directions, indications and benefits of abhyanga (head massage and body massage): One who has got his head daily well oleated alleviates head-ache, premature graying, and alopecia, while strengthening the cranial bones significantly.
english translation
nityaM snehArdrazirasaH ziraHzUlaM na jAyate। na khAlityaM na pAlityaM na kezAH prapatanti ca ॥81॥
hk transliteration by Sanscript